Actually, that might be an appropriate negative part of the card.
Think for a moment just how powerful something like that would be. Turn 1: Bring sphere level to 5. Summon a level 5 monster. On turn 1.
He better be very sub-par for a level 5 or you just won field control before the game even started. Even if it delays you from playing other cards for a few turns.
Heck even level 3/4 would be a huge advantage. Especially level 3, since that means you can play a level 3 first turn, and still be able to play a level 2 second turn.